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How to Monitor AI Model Quality After Changing the Retrieval Index

11/10/2026

An index rebuild can change which passages are retrieved and affect answers even when prompts and model versions remain unchanged.

Checks to make

Record index version and source snapshot, compare retrieval results on a fixed evaluation set, and measure answer grounding and latency. Stage the new index and keep a rollback option if citation or task quality declines.

When to get help

MLOps can evaluate retrieval changes and trace index versions. Informatix Systems can assess the symptoms, evidence, and next steps. Contact Informatix Systems to discuss this issue.